package thread;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;

public class SleepDemo {
    public static void main(String[] args) throws IOException {
        System.out.println("程序开始了....");
        System.out.println("请输入一个数字:");
        Scanner scan =new Scanner(System.in);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = br.readLine();
        int num = Integer.parseInt(line);
        for (;num>0;num--){
            System.out.println(num);
            try {
                Thread.sleep(1000);
            } catch ( InterruptedException e ) {
                e.printStackTrace();
            }
        }
        System.out.println("时间到....");
        System.out.println("程序结束了....");
        }

    }

